This was indeed another great cocktail, as John said. It was perfectly balanced for me. I used Liber & Co Grapefruit cordial instead of the grapefruit syrup, which brought in just a bit more acidity. 1 Oz of Briland Afrohead: not the best rum, but quite unobtrusive, which worked great here, and 1/3 Oz Appleton Estate Signature to add just a slight undertone of funk and complexity. I love grapefruit bitterness, but the use of the cordial and liqueur here brought grapefruit flavor with much less bitterness, which was delightful in its own right. Really a lovely drink for a quiet late Saturday afternoon.

Thanks Simon for another great cocktail.
It was a bit sweeter than I was expecting, but it could have been the grapefruit as ours are tree ripened. Did add a few drops of Difford Daiquiri Bitters which brought down the sweetness a tad. Loved it.